典型文献
Formation mechanism of ring-like segregation and structure during directional solidification under axial static magnetic field
文献摘要：
The effect of the axial static magnetic field on the macro-segregation and structure in the Al-Cu and Ni-Mn-Ga alloys during directional solidification is investigated experimentally and numerically.It is found that the ring-like segregation and structure in the above-mentioned two alloys form during directional solidification at a certain growth speed under a moderate magnetic field.For the Al-Cu and Ni-Mn-Ga alloys,the moderate values of the magnetic field under which the ring-like structure forms are about 0.5 T and 1.0 T at respective growth speed of 10 μm/s and 5 μm/s.Further,the distributions of the flow and solute in the Al-Cu alloy during directional solidification under the axial static magnetic field is numer-ically simulated.Numerical results reveal that the rotary thermoelectric(TE)magnetic convection forms in the mushy zone during directional solidification under an axial magnetic field.This flow will induce the formation of the ring-like macro-segregation and structure.Changes in structures under the mag-netic field in the experimental results are in good agreement with the distributions of the TE magnetic convection and solute in the numerical results.Therefore,the formation of the ring-like structure and segregation under the magnetic field should be attributed to the solute redistribution induced by the TE magnetic convection.
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作者姓名：
Qingdong Zhong;Huaiyu Zhong;Hongbo Han;Mingyong Shu;Long Hou;Yanyan Zhu;Xi Li
作者机构：
Panzhihua University,Panzhihua 417000,China;State Key Laboratory of Advanced Special Steels,Shanghai University,Shanghai 200072,China;Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming,Shanghai Jiao Tong University,Shanghai 200240,China
文献出处：
引用格式：
[1]Qingdong Zhong;Huaiyu Zhong;Hongbo Han;Mingyong Shu;Long Hou;Yanyan Zhu;Xi Li-.Formation mechanism of ring-like segregation and structure during directional solidification under axial static magnetic field)[J].材料科学技术（英文版）,2022(04):48-54
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0.339977
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